Source : Webster's Revised Unabridged Dictionary (1913)

Landsman \Lands"man\, n.; pl. {Landsmen}.
   1. One who lives on the land; -- opposed to {seaman}.

   2. (Naut.) A sailor on his first voyage.

Source : WordNet®

landsman
     n 1: a person who lives and works on land [syn: {landlubber}, {landman}]
     2: an inexperienced sailor; a sailor on the first voyage [syn:
        {landlubber}, {lubber}]